20327840

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{337}}^1$

素因数の和:394

約数の個数: 96

約数和(自身を含む): 53660880

約数和(自身を除く): 33333040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 52, 58, 65, 80, 104, 116, 130, 145, 160, 208, 232, 260, 290, 337, 377, 416, 464, 520, 580, 674, 754, 928, 1040, 1160, 1348, 1508, 1685, 1885, 2080, 2320, 2696, 3016, 3370, 3770, 4381, 4640, 5392, 6032, 6740, 7540, 8762, 9773, 10784, 12064, 13480, 15080, 17524, 19546, 21905, 26960, 30160, 35048, 39092, 43810, 48865, 53920, 60320, 70096, 78184, 87620, 97730, 127049, 140192, 156368, 175240, 195460, 254098, 312736, 350480, 390920, 508196, 635245, 700960, 781840, 1016392, 1270490, 1563680, 2032784, 2540980, 4065568, 5081960, 10163920, 20327840]

約数ペア:

[(1, 20327840), (2, 10163920), (4, 5081960), (5, 4065568), (8, 2540980), (10, 2032784), (13, 1563680), (16, 1270490), (20, 1016392), (26, 781840), (29, 700960), (32, 635245), (40, 508196), (52, 390920), (58, 350480), (65, 312736), (80, 254098), (104, 195460), (116, 175240), (130, 156368), (145, 140192), (160, 127049), (208, 97730), (232, 87620), (260, 78184), (290, 70096), (337, 60320), (377, 53920), (416, 48865), (464, 43810), (520, 39092), (580, 35048), (674, 30160), (754, 26960), (928, 21905), (1040, 19546), (1160, 17524), (1348, 15080), (1508, 13480), (1685, 12064), (1885, 10784), (2080, 9773), (2320, 8762), (2696, 7540), (3016, 6740), (3370, 6032), (3770, 5392), (4381, 4640)]